GB2275162A - Supporting radiant heating element - Google Patents
Supporting radiant heating element Download PDFInfo
- Publication number
- GB2275162A GB2275162A GB9302690A GB9302690A GB2275162A GB 2275162 A GB2275162 A GB 2275162A GB 9302690 A GB9302690 A GB 9302690A GB 9302690 A GB9302690 A GB 9302690A GB 2275162 A GB2275162 A GB 2275162A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- base
- microporous
- insulation material
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 13
- 239000012774 insulation material Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000012772 electrical insulation material Substances 0.000 claims abstract description 6
- 239000012229 microporous material Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005056 compaction Methods 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000002241 glass-ceramic Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003605 opacifier Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004965 Silica aerogel Substances 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- -1 iron-chromium-aluminium Chemical compound 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
- H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
- H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49082—Resistor making
- Y10T29/49083—Heater type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
- Y10T29/49158—Manufacturing circuit on or in base with molding of insulated base
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
- Y10T29/49162—Manufacturing circuit on or in base by using wire as conductive path
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Resistance Heating (AREA)
- Electric Stoves And Ranges (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Surface Heating Bodies (AREA)
Abstract
A radiant electric heater is manufactured by a method which involves providing a base (2) of microporous thermal and electrical insulation material having at least one groove (9) formed in a surface thereof, and providing an elongate electrically conductive strip (5) to serve as a heating element (4). The elongate electrically conductive strip (5) is located edgewise into the groove (9) and surface pressure is applied to the base (2) of microporous insulation material in a region (11) adjacent to the strip (5) to deform the base (2) and to urge microporous material of the base into contact with the strip (5) so as to secure the strip in the groove (9). <IMAGE>
Description
2275162 Radiant Electric Heater Method This invention relates to a method
of manufacturing a radiant electric heater particularly for use with a glass-ceramic smooth top cooker.
Radiant electric heaters are known in which an element of coiled bare electric resistance wire is supported on, and secured by staples to, a layer of microporous thermal and electrical insulating material compacted in a metal support dish. Such heaters are described, for example, in GB 1 580 909 and are incorporated in glass-ceramic smooth top cookers. The microporous insulation typically comprises a highly-dispersed metal oxide powder, such as silica aerogel or pyrogenic (fumed) silica, mixed with ceramic fibre reinforcement, titanium dioxide opacifier and a small quantity of alumina powder to resist shrinkage. Such insulation material is described in GB 1580 909.
Radiant electric heaters have also been proposed in which, instead of an element of coiled resistance wire, an element comprising an elongate electrically conductive strip of a metal or metal alloy is provided, the element being supported on edge on an insulating base. Arrangements of this kind are described, for example, in DE-OS 26 30 466, US 3 612 829 and US 4 161 648. In DE-OS-26 30 466, the conductive strip element is in the form of a spiral and is loose fitted in a pre-formed spiral groove in a rigid base of fire-resistant mortar. In US 3 612 829, a convoluted conductive strip element in the form of a spiral is located in recesses pre-formed in the surface of a cast or moulded fibrous ceramic refractory material. Staples are used to secure the strip element to the supporting base.
In US 4 161 648, a convoluted strip element of spiral form is provided with integral downwardly-extending mounting tabs which penetrate an electrically insulating sheet of high-temperature-withstanding board material and in the case of thin material may be bent over at the back of the material.
The board-like insulating sheet with the element thereon is then located on top of a layer of microporous thermal insulation material in a supporting dish.
In the present invention a radiant heater can be provided in which an elongate electrically conductive strip heater element is secured directly to a base of microporous thermal and electrical insulation material without the need for mounting tabs or staples or any other additional securing means.
Accordingly, the present invention provides a method of manufacturing a radiant electric heater comprising: providing a base of microporous thermal and electrical insulation material; providing an elongate electrically conductive strip to serve as a heating element; forming at least one groove in said base of microporous insulation material; locating said elongate electrically conductive strip edgewise into said groove; and applying surface pressure to said base of microporous insulation material adjacent to said strip to deform said base and urge microporous material of said base into contact with said strip to secure said strip in said groove.
The said surface pressure is applied to cause controlled deformation of the base by effecting compaction of the microporous insulation material either at selected locations or over substantially the entire area thereof where said strip is located.
Application of said surface pressure is preferably effected at opposite side of said strip, preferably substantially simultaneously.
The said surface pressure may conveniently be applied locally at spaced apart regions of the surface of said base along the length of said strip.
The said pressure may be applied manually or mechanically by means of one or more suitable press tools.
The said groove is formed of a depth selected according to the extent, if any, to which said strip, when secured, is required to protrude from the surface of the base of microporous insulation material.
The said base of microporous insulation material is suitably provided as a compacted layer inside a supporting dish, suitably of metal.
The base of microporous insulation material is preferably provided with a surface of substantially planar form in which the said groove is provided.
Preferably the said electrically conductive strip is of sinuous (also known as serpentine or convoluted) form along its length.
The said strip suitably comprises a metal or a metal alloy, such as an iron-chromiumaluminium alloy.
Suitable microporous thermal and electrical insulation materials are wellknown in the art, for example as described in GB 1 580 909, a typical composition being:
Pyrogenic silica 49 to 97 % by weight Ceramic fibre reinforcement 0.5 to 20 % by weight Opacifier 2 to 50 % by weight Alumina 0.5 to 12 % by weight The invention is now described by way of example with reference to the accompanying drawings in which:
Figure 1 represents a perspective view of a heating element comprising an electrically conductive strip, for use in a radiant electric heater according to the invention.
Figure 2 represents a plan view of a base of a radiant electric heater according to the invention, for receiving the heating element of Figure 1.
Figure 3 represents a plan view of a radiant electric heater according to the invention, comprising the components of Figures 1 and 2.
Figure 4 represents a cross-sectional view of the radiant electric heater of Figure 3.
A radiant electric heater is constructed comprising a metal dish 1 containing a base layer 2 of compacted microporous thermal and electrical insulation material, having a substantially planar surface and having a composition as described, for example, in GB 1580 909.
A heating element 4 is provided from an elongate strip 5 of a metal or metal alloy, such as an iron-chromium-aluminium alloy, having a thickness of, for example, 0.05 to 0.2 mm and a height, h, of, for example, 3 to 6 mm. The strip 5 is itself provided of sinuous form (sometimes also known as serpentine or convoluted form) and is bent into a desired shape for the heating element as shown in Figure 1, using techniques well known in the art. It should be noted that the dimensions of thickness of the strip quoted above are for the actual strip before making into sinuous form.
The surface of the base 2 of microporous insulation material is provided with grooves 9 in a pattern corresponding to the shape of the heating element 4. Such grooves 9 are suitably formed by means of an appropriate moulding tool during compacting of the microporous insulation material into the dish 1 to form the base 2, or may be machined into the surface of the base material after compaction. The width of the grooves 9 is arranged to be at least as great as the overall width (ie the 'peak-to-peaW dimension) of the sinuous strip 5.
The heating element 4 is then located with the base 2 so that the strip 5 enters the matching grooves 9 edgewise. The depth of the grooves 9 is selected such that, when inserted therein, the strip 5 protrudes from the base 2 to a required extent, such as, for example, 50 per cent or more of the height, h, of the strip 5.
In order to secure the strip 5 in the grooves 9, controlled pressure is applied locally to the surface of the base 2 in regions 11 adjacent to the strip, on opposite sides thereof, to deform the base by compacting the microporous material and urging the material into contact with the strip 5. One or more flat-ended metal rods could be used to apply the necessary pressure, either manually or mechanically, and it may be preferable to simultaneously apply pressure at opposite sides of the strip. It will be apparent to the skilled person that a variety of techniques could be used to apply the necessary pressure, either locally or to the entire surface of the base 2.
Against the side of the dish 1 is located a peripheral wall 3 of thermal insulation material, such as a ceramic fibre material made from aluminosilicate fibres, or alternatively microporous insulation material.
A terminal connector 6 is provided for electrically connecting the heating element 4 to an electrical supply.
A well-known form of thermal cut-out device 7 is provided, extending over the heating element 4, to switch off the heating element in the event of over-heating when the heater is installed and operating in a cooking appliance having a glass-ceramic cooking surface.
1 c F
Claims (14)
1. A method of manufacturing a radiant electric heater comprising: providing a base of microporous thermal and electrical insulation material; providing an elongate electrically conductive strip to serve as a heating element; forming at least one groove in said base of microporous insulation material; locating said elongate electrically conductive strip edgewise into said groove; and applying surface pressure to said base of microporous insulation material adjacent to said strip to deform said base and urge microporous material of said base into contact with said strip to secure said strip in said groove.
2. A method according to Claim 1, in which the said surface pressure is applied to cause controlled deformation of the base by effecting compaction of the microporous material either at selected locations thereof, or over substantially the entire area thereof where said strip is located.
3. A method according to Claim 1 or 2, in which application of said pressure is effected at opposite sides of said strip.
4. A method according to Claim 3, in which application of said pressure at opposite sides of said strip is effected substantially simultaneously.
5. A method according to any preceding Claim, in which the said pressure is applied locally at spaced-apart regions of the surface of said base along the length of said strip.
6. A method according to any preceding Claim, in which the said pressure is applied manually or mechanically by means of one or more suitable press tools.
7. A method according to any preceding Claim, in which the said groove is formed of such a depth that the said strip after securement protrudes from the surface of the base of microporous insulation material.
8. A method according to any preceding Claim, in which the said base of microporous insulation material is provided as a compacted layer inside a supporting dish.
9. A method according to any preceding Claim, in which the said base of microporous insulation material is provided with a surface of substantially planar form in which the said groove is provided.
10. A method according to any preceding Claim, in which the said electrically conductive strip is of sinuous form along its length.
11. A method according to any preceding Claim, in which the said strip comprises a metal, or a metal alloy.
12. A method according to Claim 11, in which said metal alloy comprises an iron-chromiumaluminium alloy.
13. A method of manufacturing a radiant electric heater substantially as hereinbefore described with reference to the accompanying drawings.
14. A radiant electric heater whenever produced by the method according to any preceding Claim.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9302690A GB2275162B (en) | 1993-02-11 | 1993-02-11 | Radiant electric heater method |
| DK94300745.0T DK0612197T3 (en) | 1993-02-11 | 1994-02-01 | Method of manufacturing an electric radiator heater |
| ES94300745T ES2107125T3 (en) | 1993-02-11 | 1994-02-01 | METHOD OF MANUFACTURING A RADIANT ELECTRIC HEATER. |
| DE69405603T DE69405603T2 (en) | 1993-02-11 | 1994-02-01 | Method of manufacturing an electric radiant heater |
| EP94300745A EP0612197B1 (en) | 1993-02-11 | 1994-02-01 | Method of manufacturing a radiant electric heater |
| AT94300745T ATE158464T1 (en) | 1993-02-11 | 1994-02-01 | METHOD FOR PRODUCING AN ELECTRIC RADIANT HEATER |
| JP6029169A JPH06300277A (en) | 1993-02-11 | 1994-02-02 | Manufacture of radiation electric heater |
| US08/192,989 US5369874A (en) | 1993-02-11 | 1994-02-08 | Method of manufacturing a radiant electric heater |
| GR970403111T GR3025462T3 (en) | 1993-02-11 | 1997-11-25 | Method of manufacturing a radiant electric heater. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9302690A GB2275162B (en) | 1993-02-11 | 1993-02-11 | Radiant electric heater method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9302690D0 GB9302690D0 (en) | 1993-03-24 |
| GB2275162A true GB2275162A (en) | 1994-08-17 |
| GB2275162B GB2275162B (en) | 1996-04-10 |
Family
ID=10730235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9302690A Expired - Fee Related GB2275162B (en) | 1993-02-11 | 1993-02-11 | Radiant electric heater method |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5369874A (en) |
| EP (1) | EP0612197B1 (en) |
| JP (1) | JPH06300277A (en) |
| AT (1) | ATE158464T1 (en) |
| DE (1) | DE69405603T2 (en) |
| DK (1) | DK0612197T3 (en) |
| ES (1) | ES2107125T3 (en) |
| GB (1) | GB2275162B (en) |
| GR (1) | GR3025462T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0743804A2 (en) * | 1995-05-17 | 1996-11-20 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Heater |
| DE10394082B4 (en) * | 2003-01-27 | 2008-05-08 | Iljin Electronic Co., Ltd. | Exhaust gas after-treatment device for diesel engines, has electric heater attached to catalyst unit(s) for activating catalyst or improving conversion efficiency of nitric oxide/nitrogen dioxide at low temperature |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29517021U1 (en) * | 1995-10-27 | 1995-12-21 | E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG, 75038 Oberderdingen | Radiant heater |
| DE19540004A1 (en) * | 1995-10-27 | 1997-04-30 | Ego Elektro Blanc & Fischer | Radiant heater |
| US5708251A (en) * | 1995-10-30 | 1998-01-13 | Compucraft Ltd. | Method for embedding resistance heating wire in an electrofusion saddle coupler |
| GB2323507B (en) * | 1997-03-21 | 2000-11-29 | Ceramaspeed Ltd | Electric heater unit and method of manufacture |
| GB2324233B (en) * | 1997-04-12 | 2001-02-28 | Ceramaspeed Ltd | Electric heater and method of manufacture |
| US5977524A (en) * | 1997-10-15 | 1999-11-02 | Emerson Electric Company | Microwire staple for holding the resistive member of a heating element in place |
| US5935469A (en) * | 1997-10-23 | 1999-08-10 | Emerson Electric Co. | Insulating staple for holding the resistive member of a heating element in place |
| KR20040068792A (en) * | 2003-01-27 | 2004-08-02 | 일진전기 주식회사 | Diesel exhaust gas aftertreatment device using electric heater |
| DE102007053348A1 (en) | 2007-10-30 | 2009-05-07 | E.G.O. Elektro-Gerätebau GmbH | Support for an electric heater and electric heater and manufacturing method |
| DE102007053349A1 (en) * | 2007-10-30 | 2009-05-07 | E.G.O. Elektro-Gerätebau GmbH | Support for an electric heater, electric heater, and method of manufacturing an electric heater |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US600057A (en) * | 1898-03-01 | Rheostat and electric heater | ||
| US2145564A (en) * | 1935-11-12 | 1939-01-31 | Edwin L Wiegand | Heating means |
| US2570975A (en) * | 1946-07-27 | 1951-10-09 | Mcgraw Electric Co | Electric heating element |
| US3612829A (en) * | 1970-07-17 | 1971-10-12 | Gen Motors Corp | Ceramic top infrared cooking assembly |
| US3991298A (en) * | 1975-07-28 | 1976-11-09 | Gould Inc. | Heating unit for a ceramic top electric range |
| DE2551137C2 (en) * | 1975-11-14 | 1986-04-24 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | Electric radiant heater for glass ceramic hotplates |
| GB1580909A (en) * | 1977-02-10 | 1980-12-10 | Micropore Internatioonal Ltd | Thermal insulation material |
| ZA774922B (en) * | 1977-03-09 | 1978-06-28 | Emerson Electric Co | Open coil heater |
| US4292504A (en) * | 1979-10-02 | 1981-09-29 | Tutco, Inc. | Expanded metal electric heating element with edge support |
| DE3007037A1 (en) * | 1980-02-26 | 1981-09-03 | Ego Elektro Blanc & Fischer | GLASS CERAMIC COOKER |
| NZ197851A (en) * | 1980-08-13 | 1984-09-28 | Micropore International Ltd | Cooker element:temperature sensor receives heated air |
| DE3527413A1 (en) * | 1985-07-31 | 1987-02-12 | Ego Elektro Blanc & Fischer | ELECTRIC RADIATOR FOR HEATING HEATING AREAS AND METHOD AND DEVICE FOR PRODUCING THE SAME |
| DE3539881A1 (en) * | 1985-11-11 | 1987-05-14 | Ego Elektro Blanc & Fischer | Electrical radiant heating element for heating heating surfaces, and a method and device for its production |
-
1993
- 1993-02-11 GB GB9302690A patent/GB2275162B/en not_active Expired - Fee Related
-
1994
- 1994-02-01 AT AT94300745T patent/ATE158464T1/en not_active IP Right Cessation
- 1994-02-01 EP EP94300745A patent/EP0612197B1/en not_active Expired - Lifetime
- 1994-02-01 ES ES94300745T patent/ES2107125T3/en not_active Expired - Lifetime
- 1994-02-01 DK DK94300745.0T patent/DK0612197T3/en active
- 1994-02-01 DE DE69405603T patent/DE69405603T2/en not_active Expired - Fee Related
- 1994-02-02 JP JP6029169A patent/JPH06300277A/en active Pending
- 1994-02-08 US US08/192,989 patent/US5369874A/en not_active Expired - Lifetime
-
1997
- 1997-11-25 GR GR970403111T patent/GR3025462T3/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0743804A2 (en) * | 1995-05-17 | 1996-11-20 | E.G.O. ELEKTRO-GERÄTEBAU GmbH | Heater |
| EP0743804A3 (en) * | 1995-05-17 | 1996-12-11 | Ego Elektro Geraetebau Gmbh | |
| DE10394082B4 (en) * | 2003-01-27 | 2008-05-08 | Iljin Electronic Co., Ltd. | Exhaust gas after-treatment device for diesel engines, has electric heater attached to catalyst unit(s) for activating catalyst or improving conversion efficiency of nitric oxide/nitrogen dioxide at low temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| DK0612197T3 (en) | 1998-04-14 |
| EP0612197B1 (en) | 1997-09-17 |
| ES2107125T3 (en) | 1997-11-16 |
| DE69405603D1 (en) | 1997-10-23 |
| DE69405603T2 (en) | 1998-03-05 |
| GB2275162B (en) | 1996-04-10 |
| GB9302690D0 (en) | 1993-03-24 |
| ATE158464T1 (en) | 1997-10-15 |
| US5369874A (en) | 1994-12-06 |
| GR3025462T3 (en) | 1998-02-27 |
| EP0612197A1 (en) | 1994-08-24 |
| JPH06300277A (en) | 1994-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2275162A (en) | Supporting radiant heating element | |
| GB2275163A (en) | Mounting radiant electric heater element | |
| EP0266115B1 (en) | Radiant heaters | |
| DE3262043D1 (en) | Radiant electric heating element and method of manufacturing the same | |
| EP0612198B1 (en) | Method of manufacturing a radiant heater and a heater made by such method. | |
| EP0625866B1 (en) | Radiant electric heater | |
| EP0625865B1 (en) | Method of manufacturing a radiant electric heater | |
| EP0612196B1 (en) | Method of manufacturing a radiant electric heater | |
| GB2275404A (en) | Supporting radiant electrical heating element | |
| EP0954202B1 (en) | Radiant electric heater | |
| EP1022930A2 (en) | Constituting elements of radiant electric heater | |
| EP0981263A2 (en) | Radiant electric heater | |
| US6018147A (en) | Base for an electric heater and method of manufacture | |
| EP0903962B1 (en) | Method of manufacturing an electric heater assembly | |
| EP0932326A3 (en) | Radiant electric heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20090211 |